Bhutan issued a set of 12 stamps on 02 Jun 1969 on History of Steel Making. Eight stamps were Surface mail postage Steel Foil stamps and Four stamps were Airmail Postage stamps. All stamps were Imperf.
The United States Postal Service issued a set of 10 stamps under the theme “Frozen Treats” on 20 Jun 2018. The stamps feature frosty, colorful icy pops on a stick. The tasty sweet confections come in a variety of shapes and flavours. A booklet of 20 scratch and sniff stamps show Margaret Berg’s watercolor illustrations. The stamps are printed with a coating that evokes a sweet summer scent.
Issued as First class forever mail stamps presently at 50 cents each.